Add listener_port to provision_instance

API changes
- cannot change peers or enable
peers_from_control_nodes on VM deployments
- allow setting ip_address
- use ip_address over hostname in the generated
group_vars/all.yml
- Drop api/v2/peers endpoint

DB changes
- add ip_address unique constraint, but ignore "" entries

Other changes
- provision_instance should take listener_port option

Tests
- test that new controls doesn't disturb other peers
relationships
- test ip_address over hostname

awx/api/views/root.py

@@ -129,7 +129,6 @@ class ApiVersionRootView(APIView):
         data['mesh_visualizer'] = reverse('api:mesh_visualizer_view', request=request)
         data['bulk'] = reverse('api:bulk', request=request)
         data['analytics'] = reverse('api:analytics_root_view', request=request)
-        data['peers'] = reverse('api:peers_list', request=request)
         return Response(data)